Electric bell



E. GAR-HART.

ELEUTRIG BELL.

(No Model.)

Patented July 6, 1886.

INVENTUR:

Elliptt Oarhqu'fi NITED mares Aren't ice,

ELLIOTT OARHART, OF BROOKLYN, NEW YORK.

ELECTRIC BELL.

SPECIFICATION forming part of Letters Patent No. 344,940, dated July 6,1886 Application filed April 3, 1886. Serial No. 197,635.

To all whom it may concern.-

Be it known that I, ELLIOTT CARI-mar, a citizen of the United States,and a resident of Brooklyn, in the county of Kings and State of NewYork, have invented certain new and usefullmprovements in ElectricBells, of which the'following is a clear, complete, and exactdescription, setting forth in general and in detail my invention.

My invention relates to electric bells intended tobe employed for anypurposesuch as for signal-bells on railways, in offices, dwellings, upondoors of stores, or in telephone systems.

Its object is to provide an automatic cut-out device, whereby thecircuit is broken immediately after the striker comes in contact withthe bell. The bell depends for its action upon the principle ofmomentum.

As practically developed, it consists of two terminals located upon anoperating-armature elastically connected to each other, the one beingrigidly connected to the striker and the other similarly to a weight, sothat in operating the circuit is not broken until the instant at whichthe striker comes in contact with the bell.

In order to illustrate the practical manner of carrying out theinvention, and to enable others to construct and use the same, drawingsare hereunto annexed and described, in which similar characters ofreference repre sent corresponding elements.

Figure 1 is a general top view, and Fig. 2 a side View.

The device consists of the combination of an electro-magnet, A; a backpiece or support, B, thereto, which has a right-angled projeetion, C; anadjustably and elastically supported armature, D, for said magnet, saidarmature being supported upon said projection, and the thumb-screw E andspring F being the means whereby the armature may be adjusted andelastically supported two electric terminals, G and H, normally in thecircuit I,

which passes through said magnet; a striker,

J, rigidly secured to the terminal H, which is in rigid connection tothe armature, and a weight, K, similarly secured to the terminal G; anadjustingscrew, L, adapted to adjust the pressure between the springs Fand M, the

(No model.)

ring out clearly. The terminals again come together and the bell againrings. As long as the circuitis closed between the and -posts avibrating ringing is maintained.

The invention is not limited to the precise construction hereinbeforedescribed and shown, as it is evident that many modifications may bemade therein without departing from the spirit of the invention. Thewire P connects the bell N and the binding post so as to insure thegongs leaving the hell on account of the weakening of the magnet by aportion of the current passing through wire P, bell N, gong J, andbindingpost The spring 0, which presses upon the spring M, may beomitted, and so may the weight K in cases where the spring M is heavyenough to produce suflicient momentum; or the weight may be made larger,if desired. The details of construction may be varied indefinitely.

Having now stated the title, object, and nature of the said invention,having described its practical realization by reference to the accompanyi ng drawings,and having particularly ascertained the manner inwhich the same operates to accomplish the said object, what I considerto be novel and original, and therefore claim as myinvention, is-

1. In an electric bell, the combination of an operating-armatureelastically supported, two electric terminals normally in contact, andhaving an operating connection with said armature, an elastic connectionbetween the two terminals, a gong or striker for said bell, rigidlyconnected to oneterminal, anda weight rigidly connected to the otherterminal, substantially as and for the purpose described.

2. In an electric bell, two electric terminals located upon anoperating-armature elastically connected to each other, the one beingrigidly connected to the striker of said bell and the other connectedsimilarly to a weight, so that the terminals are in a closed electriccircuit except for an instant after the striker has struck the bell,substantially as and for the purpose described.

8. In an electric bell, the combination of an electro magnet, a base orsupport thereto which has a projection at right angles to itself, aspring and armature attached to said spring, which is adjustablysupported upon the end of said projection, two electric terminalsnormally in the circuit which passes through said magnet, a strikerrigidly secured to that terminal more distant from the magnet, and a 15Weight secured to that terminal which is nearer the magnet,substantially as and for the purpose set forth in the annexedspecification.

In testimony whereof I have hereunto signed my name, in the presence oftwo subscribing 20 witnesses, this 27th day of March, 1886.

ELLIOTT GARHART. [L

Witnesses:

EDWARD P. THOMPSON, PETER B. VERMILYA.

